These inner filters are specifically designed for AEG vacuum cleaners Rapido AG 5103, 5104, 5106, 5108, 5112; AG 6106, 6108, 6114, AG6118; Ergorapido AG 18PLUS, AG 3001, 3002, 3003, 3005, 3006, 3010, 3011, 3012, 3013. Caution: these inner filters only fit the Ergorapido & Rapido references sold after March 2014, not earlier models. These filters protect your vacuum cleaner motor from dust particles. They are easy to clean and resilient. However, if broken, you need to replace them in order for your vacuum cleaner to have high airflow and strong suction power. Here are some tips to best maintain your new Ergorapido & Rapido filters: Pull the spring above the dustbin to remove the dust on the filter every time you empty the dust container. Wash filters after every 5th dustbin empty. To wash filters rinse in lukewarm water without detergent. Shake off excess water and leave to dry for minimum of 12 hours. Ensure the filters are completely dry before putting them back into the vacuum cleaner. Change filter regularly to maintain the brilliant performance of your cleaner. This pack contains two Ergorapido & Rapido inner filters. AEG filter pack reference: AEF 144.